Search results for "Improved method"
showing 10 items of 13 documents
An improved method for evaluating ideal standards in self-perception and mate preferences
2014
The aim of the study was to improve the methodology for measuring ideals of self-perception and mate preferences. The Ideal Standards Model (ISM; Fletcher, Simpson, Thomas & Giles, 1999) was used as a basis for development of the scale. It was further modified by adding a number of items from previous studies. Data were collected from 223 participants, aged 19 to 27 years. The results suggested that a modified five-factor version of the ISM is an appropriate method for evaluation of ideal characteristics. The five factors are warmth/ trustworthiness, status/ resources, intelligence, social skills and physical attractiveness.
C57BL/6-specific conditions for efficient in utero electroporation of the central nervous system.
2014
Abstract Background In utero electroporation is a fast an efficient tool to specifically address gene expression in the murine central nervous system. This technique was originally established in ICR/CD-1 outbred mice. Neuroanatomical differences between the different mouse strains and variations in gestation length require the optimization of the conditions for each strain to avoid severe complications. Furthermore the relevant position information is currently only scarcely standardized and not always easy to transfer to C57BL/6 mice. New method In this study we present an improved method for in utero electroporation of C57BL/6 including a detailed atlas that allows for specific and effic…
Methodisches zur bestimmung der molekulargewichtsverteilung von cellulosen
1959
Es wird eine verbesserte Fallungs-Fraktioniermethode zur Ermittlung von Molekulargewichtsverteilungen an Cellulosenitraten beschrieben. Es konnen mit ihr gut reproduzierbare Verteilungskurven erhalten werden, wenn man die notwendigen Bedingungen wie gleichmasige Substitution des Praparates, moglichst kleine Ausgangskonzentration zur Erreichung eines guten Trenneffektes, Vermeidung eines Abbaues wahrend der Fraktionierung usw. in genugender Weise beachtet, – Zur Auswertung der Fraktionierergebnisse raumlich inhomogener Praparate (wie z. B. merzerisierte und oxydativ abgebaute Baumwollen) wird ein statistisches Verfahren vorgeschlagen. An improved method of preciptation fractionation for dete…
Determination of -Ascorbic Acid in Lycopersicon Fruits by Capillary Zone Electrophoresis
2001
This study shows an improved method for the determination of L-ascorbic acid (l-AA) in fruits of Lycopersicon by capillary zone electrophoresis (CZE). Two backgrounds electrolytes (BGEs) have been tested: (i) 400 mM borate at pH 8.0 and 1 x 10(-2)% hexadimethrine bromide, for the separation of Eulycopersicon subgenus species; and (ii) as in BGE(i) but supplemented with 20% (v/v) acetonitrile, for the separation of species of the Eriopersicon subgenus. The present procedures were compared with two routine methods-enzymatic assay and potentiometric titration with 2,6-dichlorophenol-indophenol. While these routine methods presented some difficulties in quantifying l-AA in several Lycopersicon …
Improved method for cannula fixation for long-term intracerebral brain infusion
2017
Abstract Background Implanted osmotic minipumps are commonly used for long-term, brain-targeted delivery of a wide range of experimental agents by being connected to a catheter and a cannula. During the stereotactical surgery procedure, the cannula has to be placed correctly in the x-y directions and also with respect to the injection point in the z-direction (deepness). However, the flat fixation base of available cannula holders doesn’t allow an easy, secure fixation onto the curve-shaped skull. New method We have developed a modified method for a better fixation of the cannula holder by using an easy-to-produce, skull-shaped silicone spacer as fixation adapter. Results We describe the ap…
Building large molecular models with plastic screw-on bottle caps and sturdy connectors
2016
An improved method of connecting atoms formed with screw-on bottle caps is described. Fishing line (artificial polymer), steel wire, and countersunk bolts with nyloc nuts are proposed as sturdy connectors. Advantages and disadvantages of each method are described. The molecular models are stable while handling, can be built in a relatively short time at low cost, and can be useful at every level of education. The method is an alternative to professional model kits, in particular in construction of large models for long-term usage.
A non-destructive X-ray microtomography approach for measuring fibre length in short-fibre composites
2012
An improved method based on X-ray microtomography is developed for estimating fibre length distribution of short-fibre composite materials. In particular, a new method is proposed for correcting th ...
Improved method of manufacturing carbon nanotube infused multifunctional 3D woven composites
2021
This research work aimed to develop smart multifunctional composites via a process for uniformly dispersing carbon nanotubes (CNT) on an orthogonal three-dimensional (3D) woven glass fabric with minimised filtering effect. These smart composites could detect strain under tensile and flexural loading by the piezoresistive response of the infused CNT network. Conventional vacuum assisted resin transfer moulding was modified to control the infusion of 0.25 wt% CNT on the 3D woven glass fabric by varying the vacuum pressure. Results showed that at 101.3 kPa vacuum pressure, the CNT percolated through the thickness of the orthogonal 3D woven glass fabric while being marginally filtered by the f…
Were the chaotic ELMs in TCV the result of an ARMA process?
2004
The results of a previous paper claiming the demonstration that edge localized mode (ELM) dynamics on TCV are chaotic in a number of cases has recently been called into question, because the statistical test employed was found to also identify linear auto regressive—moving average (ARMA) models as chaotic. The TCV ELM data has therefore been re-examined with an improved method that is able to make this distinction, and the ARMA model is found to be an inappropriate description of the dynamics on TCV. The hypothesis that ELM dynamics are chaotic on TCV in a number of cases is therefore still favoured.
Improved Method for Orbital Elements Differential Correction.
1990
As was pointed out by IAU in 1976, an important problem in fundamental astronomy is the improvement of the vernal equinox and equator positions. To this aim, it is necessary to know the accurate values of minor planets orbital elements. The classical methods of orbital elements differential corrections are based on linking the observations at different epochs considering equal derivatives respect to the initial and osculating elements. In this paper we present an improved method in which the least squares matrix coefficients is calculated from the integration of the Lagrange planetary equations and its derivatives.